Lutesyo

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Lutetium
71Lu
Y

Lu

Lr
ytterbiumlutetiumhafnium
Appearance
silvery white
General properties
Name, simbolo, kaiphan lutetium, Lu, 71
Pronunciation Plantilya:IPAc-en
Plantilya:Respell
Element category puthaw nga lantanido
sometimes considered a transition metal
Group, period, block n/a6, d
Standard atomic weight 174.9668(4)
Electron configuration [Xe] 6s2 4f14 5d1
2, 8, 18, 32, 9, 2
Electron shells of lutetium (2, 8, 18, 32, 9, 2)
History
Discovery Georges Urbain and Carl Auer von Welsbach (1906)
First isolation Carl Auer von Welsbach (1906)
Physical properties
Phase magahi
Density (near r.t.) 9.841 g·cm−3
Liquid density at m.p. 9.3 g·cm−3
Melting point 1925 K, 1652 °C, 3006 °F
Boiling point 3675 K, 3402 °C, 6156 °F
Heat of fusion ca. 22 kJ·mol−1
Heat of vaporization 414 kJ·mol−1
Molar heat capacity 26.86 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1906 2103 2346 (2653) (3072) (3663)
Atomic properties
Oxidation states 3, 2, 1

(weakly basic oxide)

Electronegativity 1.27 (Pauling scale)
Ionization energies 1st: 523.5 kJ·mol−1
2nd: 1340 kJ·mol−1
3rd: 2022.3 kJ·mol−1
Atomic radius 174 pm
Covalent radius 187±8 pm
Miscellanea
Crystal structure hexagonal
Lutetium has a hexagonal crystal structure
Magnetic ordering paramagnetic[1]
Electrical resistivity (r.t.) (poly) 582 nΩ·m
Thermal conductivity 16.4 W·m−1·K−1
Thermal expansion (r.t.) (poly) 9.9 µm/(m·K)
Young's modulus 68.6 GPa
Shear modulus 27.2 GPa
Bulk modulus 47.6 GPa
Poisson ratio 0.261
Vickers hardness 1160 MPa
Brinell hardness 893 MPa
CAS registry number 7439-94-3
Most stable isotopes
Main article: Isotopes of lutetium
iso NA half-life DM DE (MeV) DP
173Lu syn 1.37 y ε 0.671 173Yb
174Lu syn 3.31 y ε 1.374 174Yb
175Lu 97.41% 175Lu is stable with 104 neutrons
176Lu 2.59% 3.78×1010 y β 1.193 176Hf
t  h  u
· r

Ang lutesyo (Iningles lutetium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Lu ug kaiphan nga atomik 71. Ang lutesyo mao ang puthaw nga lantanido.

Ang mga gi basihan niini[usba | edit source]

  1. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics, CRC press. 2000. ISBN 0849304814, http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elementmagn.pdf. 


Galeriya sa hulagway[usba | edit source]